Soon afterwards Luscinda came out from an antechamber, attended by her mother and two of her damsels, arrayed and adorned as became her rank and beauty, and in full festival and ceremonial attire.
" "These squires," returned Dona Rodriguez, "are always our enemies; and as they are the haunting spirits of the antechambers and watch us at every step, whenever they are not saying their prayers (and that’s often enough) they spend their time in tattling about us, digging up our bones and burying our good name.
He threw over him his scarlet mantle, put on his head a montera of green velvet trimmed with silver edging, flung across his shoulder the baldric with his good trenchant sword, took up a large rosary that he always carried with him, and with great solemnity and precision of gait proceeded to the antechamber where the duke and duchess were already dressed and waiting for him.
There are no more uses of "antechamber" in the book.
Show samples from other sources
I was escorted to an antechamber where I waited almost an hour.
They went into the antechamber and there, sure enough, the two gentlemen-in-waiting were, sprawling on chairs and snoring hard.
C.S. Lewis -- Prince Caspian: The Return to Narnia